Dr Fredi Otto to take part in ‘Climate Science and the Law’ seminar
Source:  Climateprediction.net
vendredi 3 novembre 2017 13:05

Hosted by environmental law firm ClientEarth and the Oxford Martin School.

Drawing on a recent paper in Nature Geoscience, the event on 7 December at SCI London brings together leading scientists in probabilistic event attribution, lawyers and academics to discuss the intersection of event attribution science and the law.

Dr Otto and other experts, hosted by environmental law firm ClientEarth and the University’s Oxford Martin School, will discuss the basic methodologies used in event attribution studies, the admissibility of statistical evidence in court, and the potential implications for common law claims against those with duties to protect society from foreseeable risks.

Climate change will be the most disruptive and defining force of this century. After a series of extraordinary climate-related weather events around the world in 2017, those affected are asking questions about responsibility, accountability, justice and future resilience.

There is growing interest in how the law and the courts will shape and be shaped by climate change and its impacts.

Through event attribution studies, scientists can now identify the human influence on changes in the frequency and magnitude of extreme weather events, such as heatwaves, droughts and storms. The information these studies provide about the increased risk of certain weather events could be crucial evidence in climate change litigation.

These recent scientific advances, together with increasing litigation, and the historic reliance of environmental courts on science, has created the need for a critical and early interdisciplinary dialogue between scientists and lawyers working on climate issues.

The event will be recorded and screened as a webinar for those who can’t attend in person – dial in details will be provided to those with Webinar tickets closer to the event date.

Climate Science and the Law Seminar, Thursday, 7 Dec 2017 at 18:00. Sign up at Eventbrite.




Issues With Work Generation
Source:  Milkyway@home
mercredi 1 novembre 2017 20:39

Hey Everyone,

Just noticed some issues with the work unit generator. Working on it.

Jake

[Edit]

Was a quick fix. I'll keep an eye on things for the rest of the night.

[/Edit]


The Whats and Whys of Basic Research
Source:  World Community Grid News and Updates
mardi 31 octobre 2017 18:39

What is basic research and how is it applicable to the work done on World Community Grid? In this article, we'll address some of the fundamental questions about basic research, which is the foundation of scientific discovery.


Maintenance shutdown
Source:  Universe@Home
vendredi 27 octobre 2017 18:08

Tomorrow (28th October 2017) our servers will be switched off due to electricity maintenance works in servers room.


Additional stats for Perfect Cuboid
Source:  yoyo@home
vendredi 27 octobre 2017 00:00

We added per user statistics of found cuboids and as well the subproject status page was extended some common statistics. Today we have added Hits to Perfect Cuboid subproject, so from now you can compete not only in earned Credits, but also in the amount of found cuboids. Free-DC is already showing Hits in Subproject Stats. And also good news, today we "crossed the equator" of the 1st Batch, Max In Progress threshold has exceeded 249 = 562.949.953.421.312, which is the half of our 1st goal - 250.


A publication on Harmonious Trees and Odd Weird Search
Source:  yoyo@home
mardi 24 octobre 2017 00:00

It has been a long time, we know, that there was no news whatsoever the results of Harmonious Trees, or Odd Weird Search. All we knew was that we found nothing, the conjectures remained safe, and even taking on more credence. It sounds a bit anti-climatic. But no! In this interval, we have been busy working on something. It is a research article, to be precise, that describes what we did to make both projects possible, what we observed, and what we can do to make it better (if there is a similar problem to be made into a volunteer computing project). And finally, after a lot of writing and editing in between great periods of procrastination (yes, I did a PhD in math in between, and yoyo of course needs to maintain the project alongside his work), today it is finally published! Titled Parallel Tree Search in Volunteer Computing: a Case Study, the article can be found here: https://link.springer.com/article/10.1007/s10723-017-9411-5 It is open access, meaning that everyone can download it and have a look freely. Thanks to TU Graz (I am a postdoc there), FWF (the Austria founding agency) and the library of TU Graz for having an open access arrangement with Springer. Otherwise, the authors generally have to pay thousands of dollars for the open access option. So, enjoy if you are interested! Here is an abstract of the article: While volunteer computing, as a restricted model of parallel computing, has proved itself to be a successful paradigm of scientific computing with excellent benefit on cost efficiency and public outreach, many problems it solves are intrinsically highly parallel. However, many efficient algorithms, including backtracking search, take the form of a tree search on an extremely uneven tree that cannot be easily parallelized efficiently in the volunteer computing paradigm. We explore in this article how to perform such searches efficiently on volunteer computing projects. We propose a parallel tree search scheme, and we describe two examples of its real-world implementation, Harmonious Tree and Odd Weird Search, both carried out at the volunteer computing project yoyo@home. To confirm the observed efficiency of our scheme, we perform a mathematical analysis, which proves that, under reasonable assumption that agrees with experimental observation, our scheme is only a constant multiplicative factor away from perfect parallelism. Details on improving the overall performance are also discussed.


Aliquot sequence 231552 has terminated!!!
Source:  YAFU
lundi 23 octobre 2017 22:23

Aliquot sequence 231552 has terminated!!!




Planned Maintenance on Wednesday, October 25 (Completed)
Source:  World Community Grid News and Updates
lundi 23 octobre 2017 21:44

We are upgrading the software version of our clustered file system on Wednesday, October 25, beginning at 12:00 UTC.


Update on This Weeks Errors
Source:  Milkyway@home
samedi 21 octobre 2017 20:11

Hey Everyone,

I just wanted to give you all a quick and more technical update on what we have been dealing with over the last week.

Our project has been running for upwards of 10 years now and we have been crunching literally billions of workunits over those years. As a result of all of your hard work and dedication, we have actually calculated enough results that we have run out of room to store the IDs of all of these results in a normal unsigned integer value (the default data type used for storing IDs in BOINC databases). As a result, on Tuesday night, I updated our database to be able to store IDs in a much larger data type to prevent this issue from happening again during the remaining life of the project. As a result, I also had to quickly patch the BOINC code we run on the server to allow it to use this newly available data type in the database.

During this process, I missed one of the foreign keys that refers to the results, specifically in the validation process. This led to an issue in validation of work units over the last couple days. I had trouble diagnosing this issue because before the workunit queue clear, everything was running fine however, after the workunit queue clear, when new work with large IDs was being returned, it silently failed to validate workunits.

I have implemented a fix for this last issue and my hope is that things will be smooth sailing from here on with regards to this issue. Of course, there is always the possibility I missed another bug in this pipeline, or I might realize I need to force validation on workunits received over the last couple days. In any case, I will be watching the server pretty closely over the next couple days to make sure its running correctly.

Sorry for all of the trouble over the last couple days and I hope you all continue to support the important research we are doing into the future.

Jake


Workunits Not Validating
Source:  Milkyway@home
samedi 21 octobre 2017 17:42

Hey Everyone,

I see a lot of workunits aren't validating. I think I know why. I'm going to take the server down for an hour or two while I try to fix it.

Sorry, for all of the trouble recently.

Jake

[Edit]

I implemented a fix. I will monitor it for the rest of the weekend.

[/Edit]